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Electronics Worksheet: Blink Programs and Delays

Electronics lesson 23: Blink programs and delays · Set 159 · 40 questions
TalentJR

Remember (ON + OFF = one blink): 1 second = 1000 ms. One blink = ON wait + OFF wait. Blinks = total time in ms ÷ one blink; repeat n times takes n × one round.

NameDateTime takenScore ___ / 40
  1. 1.⏱️ A program says “wait 6500 ms”. How many seconds is that? =
  2. 2.⏱️ How many milliseconds is a wait of 1.8 seconds?
  3. 3.⏱️ repeat 10 times { buzzer ON; wait 400 ms; buzzer OFF; wait 600 ms }
    How many milliseconds does this take in all?
  4. 4.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 450 ms }
    How many times does the LED blink in 10 seconds?
  5. 5.⏱️ What does “wait 500 ms” do? (a) turns the LED off (b) waits 500 seconds (c) pauses for half a second (d) blinks 500 times
  6. 6.⏱️ repeat 5 times { buzzer ON; wait 500 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  7. 7.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 600 ms }
    How many milliseconds does one blink (ON + OFF) take?
  8. 8.⏱️ How many milliseconds is a wait of 0.3 seconds?
  9. 9.⏱️ loop forever { LED ON; wait 450 ms; LED OFF; wait 650 ms }
    How many milliseconds does one blink (ON + OFF) take?
  10. 10.⏱️ repeat 6 times { buzzer ON; wait 800 ms; buzzer OFF; wait 400 ms }
    How many milliseconds does this take in all?
  11. 11.⏱️ A program says “wait 1000 ms”. How many seconds is that? =
  12. 12.⏱️ A program says “wait 8500 ms”. How many seconds is that? =
  13. 13.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 10 seconds?
  14. 14.⏱️ How many milliseconds are in 1 second? (a) 100 (b) 60 (c) 1000 (d) 10
  15. 15.⏱️ loop forever { LED ON; wait 950 ms; LED OFF; wait 450 ms }
    How many milliseconds does one blink (ON + OFF) take?
  16. 16.⏱️ How many milliseconds is a wait of 4.8 seconds?
  17. 17.⏱️ repeat 9 times { buzzer ON; wait 900 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  18. 18.⏱️ How many milliseconds is a wait of 3.5 seconds?
  19. 19.⏱️ repeat 3 times { buzzer ON; wait 200 ms; buzzer OFF; wait 300 ms }
    How many milliseconds does this take in all?
  20. 20.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 1 second?
  21. 21.⏱️ A program says “wait 750 ms”. How many seconds is that? =
  22. 22.⏱️ repeat 3 times { buzzer ON; wait 300 ms; buzzer OFF; wait 500 ms }
    How many milliseconds does this take in all?
  23. 23.⏱️ A program says “wait 3000 ms”. How many seconds is that? =
  24. 24.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 750 ms }
    How many milliseconds does one blink (ON + OFF) take?
  25. 25.⏱️ loop forever { LED ON; wait 550 ms; LED OFF; wait 150 ms }
    How many milliseconds does one blink (ON + OFF) take?
  26. 26.⏱️ loop forever { LED ON; wait 250 ms; LED OFF; wait 550 ms }
    How many milliseconds does one blink (ON + OFF) take?
  27. 27.⏱️ loop forever { LED ON; wait 1000 ms; LED OFF; wait 850 ms }
    How many milliseconds does one blink (ON + OFF) take?
  28. 28.⏱️ A program says “wait 2750 ms”. How many seconds is that? =
  29. 29.⏱️ loop forever { LED ON; wait 150 ms; LED OFF; wait 350 ms }
    How many times does the LED blink in 9 seconds?
  30. 30.⏱️ repeat 6 times { buzzer ON; wait 1000 ms; buzzer OFF; wait 200 ms }
    How many milliseconds does this take in all?
  31. 31.⏱️ How many milliseconds is a wait of 5 seconds?
  32. 32.⏱️ How many milliseconds is a wait of 1.6 seconds?
  33. 33.⏱️ How many milliseconds is a wait of 4.9 seconds?
  34. 34.⏱️ repeat 6 times { buzzer ON; wait 300 ms; buzzer OFF; wait 100 ms }
    How many milliseconds does this take in all?
  35. 35.⏱️ How many milliseconds is a wait of 1 seconds?
  36. 36.⏱️ loop forever { LED ON; wait 400 ms; LED OFF; wait 100 ms }
    How many times does the LED blink in 5 seconds?
  37. 37.⏱️ A program says “wait 3500 ms”. How many seconds is that? =
  38. 38.⏱️ repeat 4 times { buzzer ON; wait 100 ms; buzzer OFF; wait 800 ms }
    How many milliseconds does this take in all?
  39. 39.⏱️ How many milliseconds is a wait of 0.5 seconds?
  40. 40.⏱️ loop forever { LED ON; wait 100 ms; LED OFF; wait 150 ms }
    How many times does the LED blink in 1 second?

Answer key

  1. 6.5
  2. 1800
  3. 10000
  4. 10
  5. pauses for half a second
  6. 5000
  7. 1550
  8. 300
  9. 1100
  10. 7200
  11. 1
  12. 8.5
  13. 40
  14. 1000
  15. 1400
  16. 4800
  17. 12600
  18. 3500
  19. 1500
  20. 5
  21. 0.75
  22. 2400
  23. 3
  24. 900
  25. 700
  26. 800
  27. 1850
  28. 2.75
  29. 18
  30. 7200
  31. 5000
  32. 1600
  33. 4900
  34. 2400
  35. 1000
  36. 10
  37. 3.5
  38. 3600
  39. 500
  40. 4

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